Apparatus for separating grease.



PATENTBD SEPT. 29,1903.

E. R. EDSON. APPARATUS FOR SEPARATING GREASE.

APPLICATION FILED MAY 20, 1903.

H0 MODEL.

i h S INVENTOR BY I B ow 6 A A; A now/ms m: nonms ravens 2a., mom-Lune"wAsnmn'ron. n. c.

'ratusl UNITED STATES EUGENE RILEY EDSON,

Patented September 29, 1903.

OF CLEVELAND, OHIO.

APPARATUS Po 3 SEjPARATING c REAS E.

SPECIFICATION forming part of Lttersiatent No. 739,998, dated September29, 1903.

' Application filed May'ZO, 1903. Serial No. 157,924. (No model.)

To all whom it may concern: 7

Be it known that LEUGENE RILEY EDsoN,a

citizen of the United States of America, residing at Cleveland, in thecoun'tyof Ouyahoga and State of Ohio, have invented certain new anduseful Improvements in Apparatus'for Separating Grease fromGrease-Yielding Ma-' terial; and I hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use the same.

This invention relates to apparatus suitable for use in separatinggrease or greasy and oily matter from raw fish and other raw materialcapable of yielding the same.

The general object-of this inventionis to economically separate greasefrom greaseyieldable and gelatin-yieldable material by the treatment ofthe said material with water at a temperature low enough to effect a congelation of the grease and to facilitate and positively effect aseparation of the grease from the mass. 7 With this general object inview and to the end of realizing other advantages hereinafter appearingthe said invention consists in ce'r tain features of construction andcombinations of parts hereinafterdescribed, and pointed out in theclaims. v

In the accompanying drawings, Figure 1 is a side elevation, largely insection, of appaf ratus embodying the invention which consti tutes thesubject of this application. is a top plan, partly in section, of theappa-.

- Referring to the drawings, a designates'a' tank or receptacle which isopen'at its upper end for accommodating the introduction into thereceptacle of the I grease-yieldable material which is to be treated. I

The receptacle a is provided at its lower end and centrally with adownwardly-extendingtube or duct 19, which communicates at its upper endwith the interior chamber of the said receptacle and forms the outlet ofthe re-f ceptacle and has a normally closed valve 0.

The chamber of a cooling-jacket d, which surrounds the receptacle a, isadapted to re ceive cold brine, and a pipe f is arranged to conductbrine into the said chamber and has a normally closed valve 9.

upwardly into the said chamber.

crating plant is arranged within the jacket (I around the receptacle a.The'jacketd is provided'at its lower end with a drain-pipe j, which hasa normally closed valve is.

A series of refrigerating-coils hof a refrig- The receptacle a isprovided at its upper end with an annular trough Z, and m designates apipewhich has its'receiving end communicating with the chamber of thesaid trough.

A stirring-shaft o is arranged vertically and centrally of the chamberof the receptacle a and extends from within the lower end of the saidchamber upwardly and a suitable dis- The shaft 0 is supported inanylapproved manner-and tance above the said receptacle.

is intergeared at its upper end, as at p, with a suitably-supportedshaft 0", which is operatively provided with a driving-wheel R, to whichpower is applied in any approved man- The shaft 0 is provided within thechamber of the receptacle a and at suitable intervals vertically withlaterally-projecting ra-' dially-arran'ged stirring-arms s, and thereceptacle a is provided interiorly and at suitable intervals verticallywith stationary arms .t, which alternate with the arms s-that is,

the arms 5 and thave such relative arrangementthat the arms 8 shall,during the rotation of the shaft 0, revolve between and in closeproximity to the arms 25, and consequently the said arms 8 and tcooperate in stir- 1 ring and disintegrating the material undergoingtreatment within the receptacle (1.

7 An air-conducting pipe to communicates at its receiving end with theoutlet of asuitablyoperated pump n. The pipe it extends through v thechamber of the cooling-jacket ddnto the lower portion of the chamber ofthe receptacle a, wherein it terminates in a coil U, ar-

; rangedwithin the lower end of the said chamber and provided withorifices w, discharging It willbe observed, therefore, that meansiutroducin g cold air under pressure into the lower portion of thechamber of t-hereceptacle a is prov vided, 3 l

Atank y is arranged at one side of and a short distance from theapparatus already described. The tank 1 is supplied with cold water w,and the pipe m communicates at its discharging end with the upperportion of the chamber of the said tank. The tank y is arranged at anelevation below the trough l,

so that any grease or matter overflowing into the said trough is readilyconducted by the pipe m into the said tank without requiring theemployment of a pump in the line of the said pipe.

A water-conducting pipe 5 discharges into the tank 1 and has a normallyclosed valve 6.

A grease-conducting chute 7 is in open relation with the upper end ofthe chamber of the tank y and has a normally closed valve 8. In Fig. 1 abody of grease or grease-containing liquid 6 is shown floating on thebody of water it.

The tank 3] is provided at its lower end with a waterdischarge pipe 10,which connects with the inlet of a suitably-operated pump 12,

; whose outlet communicates with a pipe 13,

which discharges into the lower end of the chamber of the receptacle aand has a normally closed valve 14.

The operation of the apparatus and the meritorious steps resultingtherefrom are as or greasy and oily matter separated from the saidmaterial during its treatment within the said receptacle. The massintroduced into the receptacle a is preferably about half water and halfgrease-yielding material and has been sliced or cut into small pieces.Preferably the receptacle a. is filled with greaseyielding material andwater to near the top of the trough Z. The temperature of the said massis preferably maintained at about 40 Fahrenheit during the treatment ofthe material-that is, the material is treated with water within thereceptacle a at a temperature high enough to prevent freezing of themass and low enough to congeal the grease or oily and greasy mattercontained in the material, and the liberated congealed grease readilyrises through the cold water of the in ass to the top of the mass,whereit is skimmed 01f or conducted into the trough l and passes from thesaid trough through the pipe m into the tank y, wherein it floats uponthe body of water within the said tank, whence it can be conductedthrough the chute '7 upon opening the valve 8 when the level of thefloating grease within the said tank rises op posite to the receivingend of the said pipe. The grease-yieldable material introduced into thereceptacle a for treatment is cut into small pieces, as alreadyindicated, preparatory to the introduction of the material into the saidreceptacle, so that the grease shall be readily liberated at theaforesaid comparatively low temperature, and the shaft 0 is operatedduring the treatment of the material, and the revolving shaftarms 8cooperate with the stationary arms tin stirring and further breaking ordisintegrating the material, so as to facilitate the passage of thegrease from the material and permit the same to rise to the top of themass. Not unimportant in stirring and facilitating the liberation andrising of the grease is the introduction of cold air into differentportions of the lower end of the chamber of the receptacle a during theoperation of the pump 11., which is operated during the treatment of thematerial.

Of course the grease or greasy and oily matter will congeal or tend tocongeal at a temperature of 40 Fahrenheit; but the congealed matter willreadily break away or separate from the material undergoing treatmentand will rise to the top of the mass, and the stirring of the mass andthe introduction of air under pressure into the mass will positivelyliberate the congealed greasy or oily matter from the material andpermit it to rise to the top of the mass, where the said greasy and oilymatter, being lighter than the water, floats on top of the mass andthence passes into the trough Z. Of considerable value is the pumping ofwater from the tank y into the receptacle a, so as to cause the level ofthe mass within the said receptacle to rise and result in theoverflowing of water'and grease from the top of the mass into the troughZ, whence the said grease and accompanying water passes through the pipem into the tank y, and the pump 12 is operated continuously during thetreatment of the material, so as to establish a circulation of waterthrough the mass, which circulation participates in stirring the massand is instrumental in the liberation of grease and in facilitating thepassage of the grease to the top of the mass, and enough water iscontinually pumped into the receptacle a during the operation of theapparatus to effect an overflow of water from the said receptacle intothe trough l, and obviously the overflow of water into the said troughwill carry with it greasy and oily matter which has risen to the top ofthe mass. The passage of the grease which has risen to the top of themass may be facilitated by skimming the said grease into the saidtrough. The residue remaining within the receptacle a when all of thegrease has been separated from the material can be conducted 01f throughthe tube or duct 1) upon opening the valve 0.

Suitable means for skimming the risen c011- gealed grease from the topof the mass into the trough l comprises a suitably-supported tubularshaft 15, which is provided within the upper end of the chamber of thereceptacle a with a laterally-projecting skimming-arm 16, which extendsover and into the trough Z and has a flange 17, whichextends from end toend of the arm along the lower edge of the arm and projects in thedirection in which the said arm revolves during the operation of thesaid shaft. Fig. 2 shows the arm 16 shifted somewhat relative to theposition it occupies in Fig. 1 to avoid confusion of lines in Fig. 2.The shaft 15 is intergeared, as at 18, with a suitably-supported shaft20, which is 'operatively provided with a 'dri\-'ing-wheel 22, to whichpower is applied in any approved manner.

The shaft 0 is rotated in the direction in which the flange 17 of theskimming-arm 16 projects. a

lVhat I claim is 1. Apparatus for separating grease from grease-yieldingmaterial, comprising a receptacle provided, at its lower end, with avalved tube or duct which communicates with the interior chamber of thesaid receptacle; a cooling-jacket surrounding the receptacle; an annulartrough arranged to receive mat ter overflowing from the aforesaidchamber; astirring-shaft arranged vertically and centrally of the saidchamber and provided with stirring-arms; means for rotating the shaft; acoil arranged within the lower end of the aforesaid chamber and providedwith upwardly-discharging orifices; means for supplying air underpressure to the said coil; a tank arranged externally of the aforesaidchamber at an elevation below the aforesaid trough; a pipe establishingcommunication between the said trough and the said tank; a valvedwater-conducting pipe discharging into the tank; avalvedgrease-conducting passage-way communicating with the tank at theupper end of 'thetank; a water-discharge pipe communicating with thetank at the lower end of the tank, and a pump having its inletcommunicating with the outlet of the pump and discharging into theaforesaid chamber.

2. Apparatus for separating grease from grease-yielding material,comprising areceptacle provided, at its lower end, with a valvedtube orduct which communicates with the interior chamber of the receptacle;means i for cooling the receptacle; an annular trough arranged toreceive matter overflowing from the aforesaid chamber; a stirring-shaftarranged within the said chamber and provided with stirring-arms meansfor rotating the shaft; means for supplying air under pressure to thelower endof the aforesaid chamber; a water-containing tank arrangedexternally ofthe said chamber and having a grease-outlet at its npperend; means for establishing communication between the trough and thesaid tank; a valved waterconducting pipe discharging into the tank; awater-discharge pipe communicating with the water-containing portion ofthe tank; a pump having its inlet communicating with the saidwater-discharge pipe, and a pipe communicating with the outlet of thepump and discharging into the aforesaid chamber.

3. Apparatus for separating grease from grease-yielding material,comprising a receptacle; means for cooling the receptacle; a trougharranged to receive matter overflowing from the interior chamber of thereceptacle means for mechanically stirring -ma terial treated within thesaid chamber; a Water-containing tank arranged externally of the saidchamber and having a grease-outlet at its upper end means forestablishing communication between the trough and the said tank; avalved water-conducting pipe discharging into the tank; awater-discharge pipe communicating with the water-containing portion ofthe tank; a pump having its inarm arranged to skim grease from thetop ofa mass of material treated in the aforesaid chamber into the trough;means for rotating the said tubular shaft, means for supplying water tothe aforesaid chamber, and means for conducting the grease from thetrough.

5. Apparatus for separating grease-from I grease-yielding material,comprising a receptacle; means for cooling the receptacle; a coilarranged within the lower end of the afore- 1 said chamber and providedwith upwardly discharging orifices; means for supplying the air underpressure to the said coil and comprising a pipe communicating with thesaid coil and extending through the chamber'of the cooling-jacket and apump whose outlet communicates with the said pipe; a watercontainingtank arranged externally of the aforesaid chamber and having agrease-outlet, and means for conductingmatter overflowing from the saidchamber into the tank. 7

6. Apparatus for separating grease from grease-yielding material,comprising a recep tacle; means for cooling the receptacle ;means forstirring material treated within the interior chamber of the saidreceptacle; a tank arranged externally of the said chamber and having agrease-outlet; means for conducting matter'o verflowin g from the saidchamber into the tank; a valved water-conducting pipe discharging intothe tank a water-discharge pipe communicating with the tank at the lowerend of the tank; a pump having its inlet communicating with the saidwater-dischargepipe, and a pipe communicating with the outlet 'of thesaid pump and discharging into the aforesaid chamber.

7. Apparatus for separating grease from grease-yielding material,comprising a receptacle; a cooling-jacket surrounding the re ceptaclemeans for stirring material treated withinthe receptacle to effect aliberation of congealed grease or greasy and oily matter from the saidmaterial and to permit the liberated grease to rise to thetop of themass,

I and means for separating the risen congealed matter from the mass.

8. Apparatus for separating grease from grease-yielding material,comprising a receptacle; means for cooling the receptacle; means forstirrring the material treated within the receptacle; means forsupplying water to the lower portion of the interior chamber of thereceptacle to overflow grease from the receptac1e,and means forcollecting the grease overflowing from the receptacle.

9. Apparatus for separating grease from grease-yielding material,comprising a receptacle; means for cooling the receptacle; m cans forstirring the material treated in the receptacle means for supplyingwater to the lower portion of the interior chamber of the saidreceptacle; a water containing tank arranged externally of the saidreceptacle, and means for conducting matter overflowing from thefirst-mentioned receptacle into the water-containing tank.

10. Apparatus for separating grease from grease-yielding material,comprising a receptacle; means for cooling the said receptacle to effecta congelation of the grease contained in the grease-yielding materialtreated within the receptacle; means for stirring or disintegrating thematerial during the treatment usa es of the material within the saidreceptacle so as to liberate the congealed grease from the said materialand permit and facilitate a rising of the said congealed grease to thetop of the mass; awater-containingtank arranged externally of theaforesaid receptacle; means for pumping water from the said tank intothe lower portion of the interiorchamber of the first mentionedreceptacle, and means for conducting grease overflowing from the saidchamber into the water-containing tank.

11. Apparatus for separating grease from grease-yielding material,comprising a receptacle; means for cooling the said receptacle; meansfor mechanically stirring the material treated within the saidreceptacle; means for introducing air under pressure into the lowerportion of the mass of material treated within the said receptacle;means for pumping water into the lower portion of the said receptacle,and means for collecting congealed grease or greasy and oily matteroverflowing from the upper end of the said receptacle.

In testimony whereof I sign the foregoing specification, in the presenceof two witnesses, this 29th day of April, 1903, at Cleveland, Ohio.

EUGENE RILEY EDSON.

Witnesses:

O. H. DORER, TELSA SCHWARTZ.

